Wire-drawing machine



Nov. 23 1926.

' 1,608,248 J. N. SELVIG WIRE DRAWING MACHINE Filed June 1 3 Sheets-Shet l Nov. 23 ,1926. 1,608,248

J. N. SELVIG WIRE DRAWING MACHINE Filed June 1922 s Sheets-Sheet 2 v we a V w, v 4 5 9 U 0 5 1 Z w J O O. 0 w w 2% a y 9T m \W V,

Patented Nev. 23, 1926.

UNITED STATES PATENT OFFICE.

JOHN NILSEN SEIiVIG, OF CHICAGO, ILLINOIS, ASSIGNOItTO WESTERN ELECTRIC COMPANY, INCORPORATED, OF NEW YORK,-N. Y CORPORATION OF NEW YORK.

WIRE-DRAWING MACHINE.

Application filed June 6.,

This invention relates to improvements in wine drawing machines. a

One feature of the invention is the provision of a wire drawing machine, having a 5 guide roll, a capstan or drawing element and a driving mechanism therefor, with a clutch mechanism mounted within the capstan or drawing element and means for operating the clutch mechanism to uncouple the capstan from the drivin mechanism in the event that the wirebrea s during the drawing operation.

, An additional feature of the invention is the inclusion in a wire drawingmachine of the type above described, of a brakingmechanism for the drawing means which isoper-v ated in the event that the wire breaks. I

Another feature of the invention is the inclusion, in a machine of the type above 29 described, of a take-up spool, mechanism for varying the speed of the take-up spool to maintain a uniform tension on the wire between the drawing element and the take-up spool, and means responsive to the tension of the wire for both actuating the tension control mechanism and the clutch for uncoupling the capstan or drawing element from its driving mechanism in the event that the wire breaks during the drawing opera- 30 tion.

By mounting the clutch mechanism within the capstana minimum number of operative connections are provided between the driving mechanism and the capstan or drawing element, so that power for driving the drawing element is conserved, the mechanism made capable of high speed operation, and the machine rendered compact and a saving of floor space eifected. The provi- 40 sion of a single mechanism for both maintaining a uniform tension on the wire be- 7 tween the take-up spool and capstan and for stopping the'operation of the latter in the event that the wire breaks, result in a 00- 4 ordination of these functions and a simplification of the machine. By providing a means for operating the clutch device to stop the capstan in the event that the wire breaks during the drawing operation, difliculties incident with the breakage of the wire, such as tangling of the wire supplied to the wire drawing apparatus, the disarrangement of the. wire strung on the ma- 1922. Serial No. 566,385.

chine, dislodgment of the dies from' their holder, or the tangling of the stored wire are in many instances entirely revented and in all cases materially reduced Y Otherobjects and advantages of the presentinvention will be set forth in the follow- 1ng description and particularly pointed out in the appended claims.

The drawings illustrateone embodiment of the invention, in which Fig. 1 is a front elevation of a machine embodying the features of the invent-ion; Fig, 2 is an. enlarged. fragmentary side elevat1on,- partly in section, showing the lever connections for operating the capstan clutch; v

Fig. 3 is an enlarged fragmentary side 79 elevation, partly in section, showing the clutch mechanism mounted within the caps an; i

Fig. 4 is an enlarged skeleton view, partly broken away, showing the mechanism for I controlling the speed of the take-up spool; Fig. 5 is an enlarged vertical sectional view showing in detail a portion of the mechanism shown in Fig. 4;

Figs. 6 and 7 are enlarged fragmentary detail views in vertical section, parts being shown in elevation, of .a portion of the lever mechanism for operating the capstan clutch shown in Fig. 2.

Fig. 8 is an enlarged fragmentary hori zontal sectional View taken on the line 8-8 of Fig. 6, and

Fig, Qf/is an enlarged, fragmentary, dissembled perspective View showing in detail a portion-"of the mechanism illustrated in Fig. 6. I

Referring now-to the drawings in detail in which like reference numerals designate similar parts throughout the several views, 10 represents a frame work which supports a compartment 5 of substantially rectangular shape having top, bottom, back,.and side walls 11, 12, 13, and 14 respectively. The front .of the compartment may be closed by slidingdoorsand 101 of the type fully 100 shown and described in a co-pending application of V. F. Hosford, Serial No. 566,206, filed June 6, 1922. The wire drawing apparatus is mounted within the com artment 5 and comprises a horizontal sha t 18, upon which is mounted a plurality of integral stans 17-17 is a die block 21 also suitab y supported within the compartment 5.

A supply of wire to be reduced in diameter is carried by a supply spool,-56 suitably mounted at the front of the machine. The.

' "wire is guided from the supply spool-over and under pulleys 51 and 52 res ectively (Fig. 1) and then over the rear eave 19 and through the first reducing die (not shown) carried by the die block 21. The wire is then wound once around the capstan 17 of smallest diameter after which it is passed upward and over the next sheave 19 and through the next reducin die carried by the die block 21. The wire 15 then wound around the next capstan and then again over the next sheave 19 through the next reducing die, etc, until it is finally drawn down to the desired diameter bythe last re" ducing die. From the final reducing die the drawn wire passes around the capstan 17 of largest diameter and is guided by .a pulley 57 mounted on a stationary arm 58 adjustably positioned on the shaft 20. From-the pulley 57 the wire passes through an openmg 121 in the close doors 100 and 101v to a ulley 59 carried by an arm 60 and thence is lied to a take-up spool 61 driven by mechanism hereinafter to be described.

The clutch mechanism for connecting the capstans 17-17 to and disconnecting them from the shaft 18 is illustrated in Figs. 2 and 3 of the drawings, the clutch being shown in its operated position. v The shaft 18 is in the form of a sleeve which projects through a horizontally and centrally disposed opening made through the capstans 17-17 and .carries adjacent its outer end (Fig. 3) an annular member fast thereto which has secured to it by means of a' pin 71 a plurality of clutch disks 72. Alternately mounted between the clutch disks 72 are clutch disks 73 which are secured by a pin 74 to the inner peripheral wall of a cup-shaped opening 75 made in the capstans 17-17. The disks 72 and 7 3 are movable longitudinally on the pins 71 and 74 respectively, and when pressure is exerted to force the disks together they form .a driving connection between the capstans 17-17 and the sleeve 18, as isreadily understood. Means for forcing the disks 72 and 73 together comprises a plate 76 which engages the outermost disk, and when the said plate is moved toward the right into the position shown, serves to force the disks together sufliciently to cause them to rotate as a unit. The plate 76 is fastened to one end of a shaft 77 mounted within the sleeve 18. A transverse .pin 79 issecured .to the shaft 77 and projects through diametrically opposite longitudinal slots made in the sleeve 18 and engages an annular channel formed in the inner wall of a housing 78 so as to be movable longitudinally therewith butfree .to rotate independently of the said.

housing.- Through the mediumof the pin 79 and slots 80 the shaft 77 and housing 78 arefmovable together longitudinally of. the

sleeve 18. Means (not shown) is provided for preventing thehousing from turnin but permitting it to move longitudinally o the sleeve 18. Secured to the sides of the housing 78 at diametrically opposite points are pins 81 which receive the bifurcated ends of a forked-member 82 which is pivoted at 83 along with a link 84. The link has secured to its free end a pin 85which fits within a slot formed in the upper end of a vertically reciprocable rod 86. For a more detailed illustration and description of the clutch mechanismper se reference is madeto the co-pending application of W. F. Hosford, Serial No.,566,206, filed June 6, 1922.

The sleeve 18 is driven by a bevel gear 32 (Fig. 2) secured thereto, this gear meshing with a bevel'gear 33 fast upon a shaft 34 which is driven through suitable mechanism by a motor or other source of power (not shown).

In wire drawing machines the former practice has been to connect the capstan by intermediate shafting to a clutch mechanism mounted apart therefrom. By mounting the clutch mechanism within the capstan this intermediate shafting isdispensed with, resulting in a conservation of power and permitting higher speed operation. Further the over-all width of the machine is materially reduced and a saving of considerable floor space effected. I

As previously stated, the clutch mechanism shown in Fig. 3 is illustrated in its operate-d position in which the capstans 17-17-are connected with the sleeve 18.

When 'it is desired to release the clutch llfi mechanism and stop the operation of the capstans'17--17, a knob is moved to the left, as viewed in Figs. 2 and 7. This knob is mounted on the projecting end of a rod 126 by a pin 127, fastened to the knob, which fits within a longitudinal slot 128 out in the rod. Due to this connection the knob 125 may move a limited distance on the rod without causing any movement of the latter. The rod 126 is reciprocably mounted within a bracket 129 fastened to the front wall of'the compartment 5. When the capstan is operating, the rod 126 is held in the position shown inFig. 7 by means of a spring pressed pawl 130 which engages a 1,eoa,24a a notch cut in the rod. -When the knob 125 is moved to the left to stopthe operation of the capstan, as above described, a shoulwithin an opening forme .der 131 formed on the knob engages a projection 132 integral with the pawl 130 causmg the said pawl to be rotated counterclockwise and free the rod 126 which is moved toward the left by a. compressionspring 153 Fig. '6) to he hereinafter more fully described. Pivoted to the rod 126 at a point 133 is a lever 134 which is pivoted at one end to the bracket 129 and at its other end to one end of a link 135, the other end of which is pivoted to a bell-crank lever 136 pivotally mounted upon a bracket 137 secured to a portion of. the framework of the machine, (Fig. 2). The bell-crank lever 136 is also pivoted to one end of a link 138, the other end of which is connected to the laterally extending arm 139 of a bell-crank lever 140. This lever is pivoted on a stud shaft 141 (Fig. 6) carried by abracket 142 fastened toa portion of the framework 10. The other arm 143 of the bell-crank lever 140 is bifurcated to straddle one end of a rod 144 to which it is pivotally connected by means of a stud 145. The rod 144 is reciprocably mounted within the bracket 142 and is prevented from turning) by means of a pin 146 carried by the said racket which fits within a-longitudinal'slot 147 cut in the said rod. The inner end of the rod 144 has a ton ue portion 148 and a lug 149 on either side thereof as shown in Fig.- 9. When the capstan is operating, the end of the rod 144 fits within'a longitudinal slot 150, out in a block 151, in a position-in which the lugs 149 rest beneath lugs 152 which narrow the front. portion of the slot to a width which is only sutiicient to receive the tongue pore tion 148: When the knob 125 is moved as previously described, through the rod 126, lever 134, link 135, bell-crank 136, link 138, and bell-crank 140, the rod 144' is moved toward the right, as viewed in Fig. 6, by the compression spring 153 which bears at one end against a shoulder formed on the-rod 144 and at itsother end against a plug 154.

The rod 144 ism'oved a sutticient distance to carry the lugs 149 from beneath the lugs 152 and permit the block 151 to freely slide on the tongue 148. The block 151 is circular in cross section and is reci rocably mounted in a projecting portion 155 carried by the framework of the machine. When the block 151 is freed by the rod 144, it is moved downwardly, as viewed in Fig. 6, by means, of energystored in a compression spring 156 which bears at one end against a collar 157. which is in engagement with lock nuts 158 threaded on a rod 159, the other end of said s ring, engaging the bottom of a cup-shape opening 160 formed-in the block 151. In moving downwardly the block 151 engages theu'pper edge of a vertically disposed casin 161 'be herelnafter described. Threaded on the upper end of the rod 159 are nuts 165 and 166 which clamp between them a block 167 carryin at diametrically opposite points pivot pins 168 upon which the bifurcated ends of a lever'92 are pivoted. The lever 92 is pivotally mounted at 93 upon a bracket 94 carried by the framework 10, and is connected b a link 91 with the rod 86 (Figs. 2 and 3 After the block 151 has been coupled to the casing 161 and rod 159 through the medium of the spring 156, as previously described, these three elements are moved downwardly, a distance limited by the engagement of a brake member 89 carried by the housing 78 with the annular member carried by the capstan, which movement will be described presently, the

lever 92 being rocked, clockwiseabout its pivot 93 by an upward movement of the rod 86. The rod 86 is moved in this direction, through the link 84,- fork member 82 and casing '7 8, the rod 77 which is moved toward the le as viewed in Fig. 3, by means of ener which is released by the actuation of the knob 125, as hereinbefore described. The spring 87 has one of its ends in engagement with the said shaft and its other end against a plug 88 screwed into the end of the shaft 18. The rod 77 movin toward the left car. ries with it the plate 6, thereby relieving the pressure'on the clutch disks 72 and 73' so that these disks no longer couple the capstans 17-17 to the sleeve 18. The housing 78 is limited in its movement toward the left, as hereinbefore described, by the engagement of the; brake member 89 carried thereby with an annular member 90 rotatable with the capstans 17-17 the braking surface serving to stop the rotation of the capstans after the clutch mechanism is released. A

When it is desired to start the capstans the foot pedal 97' is depressed, which movement immediately lifts the casing 161 and block 151 restin at the time upon its upper' surface, the utter in its upward move ment compressing ,the spring 156. After moving the block 151 upward a distance stored in a compression spring 87 the rod 77 to the right, as viewed in Fig. 3,

against the spring 87. As the housing 78 and rod 77 are moved toward the right, the brake member 89 carried by the housing 78 moves out of engagement with the annular member 90, thereby freeing the capstan, the

further movement of the rod 77 causing the plate 76 carried thereby to force the clutch disks 72 and 73 into engagement with each other so that they form a driving connection between the capstans 17--17 and the sleeve 18'. As the rod 159 is moved upwardly to operate the clutch mechanism, as above described, the operator pulls outwardly on the knob 125 and when the block 151 has been moved upwardly, through the medium of casing 161 and rod 159, a distance sufiicient to ing the lugs-149 opposite the wide portion of the slot 150, the rod 144 may be moved toward the left, as viewed in Figs. 8

' and 9 until the said lugs rest beneath the the housing 78 and shaft 77 in such projections 152 formed in the slot. When the rod 144 is in this position it supports the block 151 in its upwardly moved position, and the block in turn through the me-- dium of sprin 156, which is stronger than spring 87, hol s the rod 159 in its upwardly moved position. The rod 159, through the lever system heretofore described, retains 051- tion that the plate 76 looks the clutch isks 72 and 73 together. The rod 144 is retained in its locking position through the system of levers connectin it with the rod 126 the latter rod being ficked in its outwardly moved position by means. of the spring pressed pawl 130.

After the clutch mechanism has been 'ac-.

tuated through the foot pedal 97 to connect the ca stan with the driving mechanism and the said clutch has been locked throu h the actuation of the knob 125, the foot pe a1 97 ma be released, which is returned to its initia elevated position: by the weight of the casing 161 which moves downwardly. a distance limited by the pin 162 and slot 163.

The mechanism for driving the take-up spool 61 at varying speeds to compensate for t e varying diameters thereof as. wire is stored on the spool, which mechanism includes a friction clutch the driving'action of which is controlled by the tension of the drawn wire, will now be described. A suitabT gearing (not shown) drives a horizontal shaft 40 (Fig. 4) positioned a short distance below the shaft 18., The'fshaft 40 extends .into a housing 41 (Fig. 1) and carries at its forward end a worm gear 42 (Fig. 4) which meshes with a worm 43 formed'on a sleeve ber 48.

45 rotatable in suitable bearings (not shown) carried by the housing 41. ne end of the sleeve has secured thereto a disk clutch mem- Extending through the sleeve 45 and rotatable independentl thereof is a spindle 52 having splined t ereon a clutch disk member 54. suitably secured to the spindle 52 so as to rotate therewith. The clutch disks 48 and 54 are normally held out of engagement with each other by means of a spring 59. When the disks are in engagement they form a driving connection between the sleeve 45 and shaft 52 so that the take-up spool 61 is driven by the shaft 40. The driving an agement of the disks 48 and 54 is controlled leverage mechanism indicated generally by reference numeral 200. This mechanism ineludes the arm 60 having pivotally mounted thereon the pulley 59 over which the drawn wire passes to the take-u spool 61. For a detailed disclosure and description of the mode of operation of the leverage mechanism 200 to vary the speed of the take-up spool 61 responsive to the tension on the drawn wire between the. take-up spool and last reducing die, reference is made to my co-pending application, Serial No. 541,633, filed March 7,

1922, since this mechanism is identical with that disclosed in my application above referred to. I

As is described in' my said application, Serial No. 541,633, whenthe tension on the drawn wire is decreased below the" proper tension, the leverage-mechanism 200 is actuated to increase the speed of the take-up spool, and in this operation, the link 97,

by suitable The take-up spool 61 is which is one element of the said leverage mechanism, is moved downwardly. When the tension on the drawn wire is increased above the proper tension, the said link is moved u ward y. In the event that the wire breaks, t elink 97 is caused to move downwardly a distance suflicient to move a plate 112 carried by the link into engagement with a collar 121' and cause a downward movement thereof. The collar 121' is carried by a rod 119 the upper end of which is pivoted (Fig. 7) to an arm 122' fast on a shaft 123 which also has secured thereto the spring pressed pawl 130.v Inthe event that the wirebreaks durin the drawin operation and the rod'119'v 1s depressed, 1t causes arm 122' to turn the shaft 123' counter-clockwise, as viewed in Fig. 7. This movement of shaft 123- disengages'pawl-l30 so that the rod 126 is free to move inwardl' to disengage the clutch mechanism within the capstan in the same manner that the said rod 126 isxfreed by disengaging the pawl 130 through an actuation of knob 125 which operation has been previously. described.

From the above it will be understood that the link 97 which is actuated responsive to the tension of the drawn wire to operate the 1n the capstan to stop mechanism for varying the speed of the takeup s I, also in the ,event that the strand brea actuates means for tripping the pawl 130 which releases the mechanism for disengaging the clutch mechanism mounted withthe operation thereof. What is claimed is: f

1. In a wire drawing machine, a die block designed to support a lurality of dies, two shafts, a' series of s eaves independently mounted on one shaft, a ca stan mounted on,

p the other shaft, means for riving said shaft,

a clutch mechanism locatedwithin the cap-' stan for o eratively'connectingthe capstan with the s haft, a wire storagemechanism, and means assoc? withthe wire between the ca tan and said storage-mechanism for I operatm said clutch mechanism to-stop the capstan .111 the event that the wire breaks.

2. In a wire drawing-machine,a die block designed to -support a 'pluralitfiof dies, a pair of shafts, a plurality of s eaves independently mounted on one'of said shafts,

I a capstan mounted on the other shaft, means drawing element a o capstan with the s pair of shafts,

for driving said shaft, a] friction clutch mechanism for o'pleratively connecting the -aft, a wire storage mech -y amsm, and means associated with the wire between the capstan and wire storage mechanism-for operating the clutch mechanism to stop the capstan in the .event' that the wire breaks.

3. Ina wire dr wing machine, a die block of dies, a

luralit a pluralityof s eaves-independently mounted on one of said shafts, a capstan mounted on the other shaft, means for. driving said shaft, a friction clutch mechanism within said capstan, for o era-1 designed to support a .tively connecting .thecapstan with the s aft,

a wire storage mechanism,'and meansassociated'. with thegwire between'the capstan and the wire storage mechanismfor operating the clutch mechanism to stop the capstan in the event-.tha't the wire breaks.

'4. In a wire drawing machine, a die block designed. to support a plurality of dies, a

shaft-, a plurality of sheaves independently mounted thereon; a driving shaft, a capstan mounted thereon, a friction clutch. mechanismwithin saidfcapstanfor operatively connecting the capstan with the dr ving shaft, a wire storage mechanism, a. reciprocable member and means associated with the wire between the capstan and said storage-- mechanism for reciprocating said member to operate the clutch mechanism.

5. In a wire drawmg machine, a die block designed to support a die, a gulde roll, a

means up spool, a clutch-mechanism for operatively connecting and disconnecting said draws ing, lement to and from said driving means, mechanism for operating said clutch mechatake-up spool driving r said; ra-wing element and take nism to stop the operation of the drawing element in the event that the wire breaks, and means for controlling the speed of the take-up spool. to maintain a uniform tension in thewire. v

6. In a wire drawing machine, a die block designed to support a die, a guide roll, a

drawing element, a take-up spool, drivingv means for said drawingv element and takeup spool, clutch mechanism for o eratively connecting and disconnecting sai drawing element to and from sald driving means,

,control means forvarying the speed of the 1 take-up spool, andmeans .for operating said clutch mechanism and said control means.

' 7 In a wire drawing machine, a die blockdesigned to support a die, a guide, roll, a drawin element, a take-up spool, driving means. or said drawing element and take-' up spool, 'a-cl'utch mechanism mounted within said drawin element for operatively con necting-and isconnecting it toand from said driving theanaedntrol means for vary ing-the s'peed of i heiltake-np spool, and means res j 'nsive to the tension in the wire between t e 'take-upspool and drawing element for controlling the-clutch mechanism and said control means. I

9. In a wire drawing machine, a die block element, a take-up spool, driving designed to support a die, a guide roll, a

drawing. element, driving means for the drawing element, a take-up spool, a clutch mechanism ,for operatively connecting and disconnectin the drawing element to and from the driving means, mechanism for operating the clutch mechan'ismto disconnect the drawing element from the drivin means m'the event that the wire breaks,an means for controllingthe speed of the take-up spool to maintain a uniform tension in the .wire.

10. In a wire drawing machine, a die block designed to support a die, a guide roll, a drawing element, a take-up spool, driv 11'1" means 'for the drawin element and the talZe-up spool, clutch mecfianism for operatively connecting and disconnecting the drawing element to and from the driv'm means, mechanism for operatin the clutc mechanism to disconnect the rawing ele ment from the driving means, control means forvarying the speed of the take-up spool,

and means for operatin both the last mentioned mechanism and t e control means in the event that the wire breaks.

11. In a wire drawing machine, a die blockdesigned to support a die, a guide roll, a drawing element, a take-up spool, driving means for the drawing element and the take-up spool, a clutch mechanism for operatively connecting and disconnecting the drawing element to and from the driving means, braking means for, the drawin element, mechanism for operating the clutc mechanism to disconnect the drawing element from the driving means and to a ply the braking means to the drawing e ment in the; event that the wire breaks, and means responsive to the tension in the wire between the take-up spool and the drawing element for controlling the speed of the take-up spool to maintain a uniform tension in the wire,

12. In a wire drawing machine, a die block designed to support a die, a. ide roll, -adrawing element, a take-up spoo driving means for the drawin element, a take-up spool, driving means or the drawing element and take-up spool, a clutch mechan1sm for olpera'tively connecting and dlsconnecting t e drawing element to and from the driving means, braking means for the drawing element, control means for varying the speedof the take-up spool, and means-associated with the wire between the take-up spool and the drawin element for control- 1mg the clutch mec anism, the braking means and the control means.

13. In awire drawing machine, a die block designed to sup ort a die, a guide roll, a drawing element, riving means therefor, braking means for the drawing'element and mechanism for operating the braking means in the event that the wire breaks.

14. In a wire drawing machine, a guide roll rotatable around a horizontal axis, a wire drawing element rotating around a' horizontal axis disposed below and in sub stanti'allythe same vertical lane as the axis of the guide roll, a die bl ck designed to support a die located between the'guideroll and the drawin element, brakin means for the drawin e ement, and mec anism for operating t e braking means in the event that the wire breaks.

15. In a wire drawing machine, die

i block designed to support a die, a guide-roll,

a drawing element, driving means for the drawing element, braking means associated with the drawing element, a storagemecha- I ni'sm, and means controlled by the wire bein the event that tween the drawing element and the storage mechanism for. operating the braking means the wire breaks.

1 6. In a wire drawing machine, a die block designed tosupport a plurality of dies, two shafts, a series of sheaves independently capstan, a wire stor .on theother shaft, means for riving the last mentioned shaft, braking means associated with the drawing means, and means for operating the braking means in the event that the wire breaks.

17. In a wire drawing machine, a die block designed to support a die, a guide roll, a drawing element,- driving means therefor, braking means for the drawing element, and mechanism for disconnecting the drawing element from the driving means and operating the braking means inthe event that the wire breaks.

18. In a wire drawing machine, a die block designed to sup rt a die, a guide roll, adrawin element,- drawin e ement, mechanism for'operatively connecting. and disconnecting the drawing element to and from the driving means, a store e mechanism, braking means associate with the drawin element, and means controlled by the wire hetween the drawing element and the storage mechanism for operating the mechanism to disconnect the drawing element from the driving means and for riving means for the r olperating the braking, means in the event t at the wire breaks. I

19. 'In a wire drawing machine, a die block designed to. support a lurality of dies two shafts, a series of s eaves mdependently mounted on one shaft, a capstan mounted on the other shaft, means for driving the last mentioned shaft, a clutch mechanism located within the capstan for operatively connecting the capstan to and disconnecting it from its associated shaft, braking means for the capstan, and means for operating the clutchmechanism to disconnect'the capstan from the associated shaft and for operating thebraking means in the event that-the wire breaks.

20. In a wire drawing machine, a die sociated shaft, a braking means for the mechanism, and means associated witht e wire between the capstan and the wire storage mechanism for operating the clutch mechanism to disconnect the capstan from its associated shaft and to a ply the braking means to the capstan in e event that the wire breaks.

21 In a wire drawing machine, a pair of horizontal shafts disposed one above the other in substantially the same vertical plane, a stepped capstan mounted on the lower shaft, a series of sheaves independently mounted on the upper shaft, said sheaves being of nniform diameter and the diameter thereof being less than the diameter of the largest stepped portion of the capstan, a die block designed to support a plurality of dies-located between the capstan and the sheaves, means for driving the lower shaft, a clutch mechanism located within the capstan for operatively connecting the capstan to and disconnecting it from 10 its associated shaft, braking means for the capstan, a wire stora e mechanism, and means associated with t e wire between the capstan and the storage mechanism to operate the clutch mechanism to disconnect the capstan from its associated shaft and to apply the braking means to the capstan in the event that the wire breaks.

In witness whereof, I hereunto subscribe my name this 31st-day of May, A. D. 1922. JOHN NILSEN 'SELVIG. 

